All machine instantiations are now implicitly referenced and always generated,

All machine instantiations are now implicitly referenced and always generated,
even if they are not referenced. In the backend, entry points will be written
out alongside start, error and first final states. This is currently
implemented in tabcodegen.cpp in rlgen-cd.

The entry keyword (introduced in the last revision) was removed as it will not
be used.

More name changes writeOut* => write*.

git-svn-id: http://svn.complang.org/ragel/trunk@136 052ea7fc-9027-0410-9066-f65837a77df0